do not change gui settings when running selected code by F9 (bug #65617) * gui-preferences-ed.cc/h: new gui preference for storing the name of the temp. file used for running selected code by F9 * file-editor.cc (request_open_file): if breakpoint oder debug marker is used and file name is equal to temp file, just return and do not open the file * octave-qscintilla.cc (contextmenu_run): do not handle lines with keyboard in a special way anymore, store file name of temp. file in settings, variable show_dbg_file and update signal and function calls accordingly; (ctx_menu_run_finished): remove temp file name from settings * octave-qscintilla.h: remove first argument show_dbg_file in signal ctx_menu_run_finished_signal and slot ctx_menu_run_finished

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